INON benefits you with above advantages by producing specific accessories for each specific camera/housing model.Other manufacture's versatile lens adopters or universal strobe cables look like very useful but they often show;

Just enough to attach a lens

>>without optimizing optical performance of lens resultingonly widen an image area with heavy vignetting on corners or terrible quality in peripheral part of an image

INON system is completely different from those versatile products and simple yet reliable to provide "high quality image"/"highly accurate S-TTL Auto" to support every level of underwater photographers.